Self-consistency bias

We believe that we are consistent in our beliefs, behaviours, options, attitudes, etc. This is a memory bias.

Example

We might go on a blind date and not being thrilled about the date. But years later we'll tell people how amazing that date was after you've fallen in love with the person.

Consequences

Our decisions can substantially change our immediate memory of what we have just perceptually experienced in an attempt to make our experience consistent with our preceding decisions.